Sedex Zinc Ore
Sedimentary exhalative (SEDEX) zinc-lead ores like those from Sullivan mine, featuring sphalerite in fine-grained sediment-hosted deposits. Under HTS 2608.00.00 as primary zinc ores for selective flotation. Major historical source of zinc concentrates.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If SEDEX deposits with lead-zinc ratio favoring lead
Value-based determination assigns to lead ores heading.
If preconcentrated precious metal-bearing fines
SEDEX often contains precious metals warranting other slag/residue headings.
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Import Tips & Compliance
• Reference deposit type in documentation for customs familiar with SEDEX characteristics
• Account for fine particle size requiring specialized concentration processes
• Monitor cadmium content declarations as common impurity in SEDEX ores
Related Products under HTS 2608.00.00
Zinc Blende Ore
Zinc blende, also known as sphalerite, is the primary zinc ore consisting mainly of zinc sulfide (ZnS) with minor impurities. It falls under HTS 2608.00.00 as a zinc ore mined directly from deposits and used for zinc extraction after concentration. This classification covers natural zinc-bearing ores prior to smelting or refining.
Willemite Zinc Ore
Willemite is a zinc silicate mineral (Zn₂SiO₄) found in oxidized zinc deposits, often with fluorescent properties. Classified under HTS 2608.00.00 as a natural zinc ore suitable for concentration and smelting into zinc metal. It represents secondary zinc ores from weathered primary deposits.
Smithsonite Zinc Ore
Smithsonite (ZnCO₃) is a zinc carbonate ore formed through supergene enrichment in zinc deposits. It is imported under HTS 2608.00.00 as a zinc ore for roasting and leaching in zinc production. This ore type is common in nonsulfide zinc deposits.
Hemimorphite Zinc Ore
Hemimorphite (Zn₄Si₂O₇(OH)₂·H₂O) is a hydrated zinc silicate ore from oxidized zones of zinc deposits. HTS 2608.00.00 covers this ore as it is concentrated for zinc silicate flotation recovery. It serves as an important source for secondary zinc production.
Calamine Zinc Ore
Calamine refers to a mixture of zinc carbonate and silicate ores, historically mined for zinc extraction. Under HTS 2608.00.00, it qualifies as zinc ore when containing sufficient zinc for metallurgical recovery. Common in European and North American deposits.
Zinc-Lead Mixed Ore
Polymetallic ores containing both zinc and lead sulfides, such as those from Red Dog mine, with zinc as principal value. Classified under HTS 2608.00.00 when zinc predominates for separate concentration circuits. These ores require complex flotation separation.